Impact of the real bug fix dataset size.
We can observe a clear trend that more real bug fixes lead to an improved performance across all RealiT  variants. This holds true even for small fine-tuning datasets of around 1000 (less than 5% of the original dataset size) bug fixes. As reported by the authors of ManySStuBs4J [1]} or PySStuBs [2]}, real bug fix collections of this size can be obtained by mining the top 1000 most popular Github projects for the respective language.
